This example shows how to receive a Waspmote Frame via SX1272 module. Steps performed: - Configure the LoRa mode - Receive a packet sending an ACK in that case
Required Materials
1 x Waspmote PRO
1 x Battery
1 x MiniUSB wire
1 x SX1272 module (LoRa)
1 x Sender module with SX_07a example
Notes
- The SX1272 module is provided with a special 4.5 dBi antenna, which enables maximum range. The only exception is Smart Parking; in this case the antenna is smaller, 0 dBi, to fit inside the enclosure.
- It is not recommended to work without an antenna screwed to the module. The module could be damaged due to RF reflections.
- The SX1272 module can only be used in special Waspmote units which have been modified to drive the SPI pins to SOCKET0. (only SOCKET0 is available for SX1272)
- This module does not save the configuration. So, the network settings as the mode or the channel MUST be configured every time it is switched on.
- This example can be executed in Waspmote v12 and Waspmote v15
Code
/*
* ------ [SX_07b] - RX LoRa with ACKs and Retries --------
*
* Explanation: This example shows how to receive a Waspmote Frame
* via SX1272 module. Steps performed:
* - Configurate the LoRa mode
* - Receive a packet sending an ACK in that case
*
* Copyright (C) 2014 Libelium Comunicaciones Distribuidas S.L.
* http://www.libelium.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*
* Version: 0.1
* Design: David Gascón
* Implementation: Covadonga Albiñana, Yuri Carmona
*/
// Include these libraries to transmit frames with sx1272
#include <WaspSX1272.h>
#include <WaspFrame.h>
// define status variable
int e;
void setup()
{
// Init USB port
USB.ON();
USB.println(F("SX_07b example"));
USB.println(F("Semtech SX1272 module. RX LoRa with Waspmote Frame, ACKs and Retries"));
USB.println(F("----------------------------------------"));
USB.println(F("Setting configuration:"));
USB.println(F("----------------------------------------"));
// Init sx1272 module
sx1272.ON();
//// Options to configure: ////
// Select frequency channel
e = sx1272.setChannel(CH_11_868);
USB.print(F("Setting Channel CH_11_868.\t state "));
USB.println(e);
// Select implicit (off) or explicit (on) header mode
e = sx1272.setHeaderON();
USB.print(F("Setting Header ON.\t\t state "));
USB.println(e);
// Select mode: from 1 to 10
e = sx1272.setMode(1);
USB.print(F("Setting Mode '1'.\t\t state "));
USB.println(e);
// Select CRC on or off
e = sx1272.setCRC_ON();
USB.print(F("Setting CRC ON.\t\t\t state "));
USB.println(e);
// Select output power (Max, High or Low)
e = sx1272.setPower('H');
USB.print(F("Setting Power to 'H'.\t\t state "));
USB.println(e);
// Select the node address value: from 2 to 255
e = sx1272.setNodeAddress(2);
USB.print(F("Setting Node Address to '2'.\t state "));
USB.println(e);
USB.println();
delay(1000);
USB.println(F("----------------------------------------"));
USB.println(F("Receiving:"));
USB.println(F("----------------------------------------"));
}
void loop()
{
// Receiving packet and sending an ACK response
e = sx1272.receivePacketTimeoutACK(10000);
// check rx status
if( e==0 )
{
USB.println(F("Show packet received: "));
// show packet received
sx1272.showReceivedPacket();
}
else
{
USB.print(F("Receiving packet TIMEOUT, state "));
USB.println(e, DEC);
}
USB.println();
}
Output
H#
SX_07b example
Semtech SX1272 module. RX LoRa with Waspmote Frame, ACKs and Retries
----------------------------------------
Setting configuration:
----------------------------------------
Setting Channel CH_11_868. state 0
Setting Header ON. state 0
Setting Mode '1'. state 0
Setting CRC ON. state 0
Setting Power to 'H'. state 0
Setting Node Address to '2'. state 0
----------------------------------------
Receiving:
----------------------------------------
Show packet received:
==============================
dest: 2
src: 3
packnum: 0
length: 53
retry: 0
payload (HEX): 3C3D3E800223333837323536303030236E6F64655F3030312330234241543A3938234143433A33373B363B3130333123
payload (string): <=>#387256000#node_001#0#BAT:98#ACC:37;6;1031#
==============================
Show packet received:
==============================
dest: 2
src: 3
packnum: 1
length: 53
retry: 0
payload (HEX): 3C3D3E800223333837323536303030236E6F64655F3030312331234241543A3939234143433A33363B363B3130333623
payload (string): <=>#387256000#node_001#1#BAT:99#ACC:36;6;1036#
==============================
Show packet received:
==============================
dest: 2
src: 3
packnum: 2
length: 53
retry: 0
payload (HEX): 3C3D3E800223333837323536303030236E6F64655F3030312332234241543A3939234143433A33343B393B3130323923
payload (string): <=>#387256000#node_001#2#BAT:99#ACC:34;9;1029#
==============================
...